Tex. Government Code § 21.010

(a) A justice or judge, as applicable, of the supreme court, the court of criminal appeals, a court of appeals, a district court, the business court, a county court, a county court at law, or a statutory probate court may not, on the date the person takes office as a justice or judge or while serving as a justice or judge, have a significant interest in a business entity that owns, manages, or operates:

(1) a community residential facility described by Section 508.119;

(2) a correctional or rehabilitation facility subject to Chapter 244, Local Government Code; or

(3) any other facility intended to accomplish a purpose or provide a service described by Section 508.119(a) to a person convicted of a misdemeanor or felony or found to have engaged in delinquent conduct who is housed in the facility:

(A) while serving a sentence of confinement following conviction of an offense or an adjudication of delinquent conduct; or

(B) as a condition of community supervision, probation, parole, or mandatory supervision.

(b) A justice or judge is considered to have a significant interest in a business entity described by Subsection (a) for purposes of this section if:

(1) the justice or judge owns any voting stock or share or has a direct investment in the business entity; or

(2) the justice or judge receives money from the business entity.

(c) A violation of this section by a justice or judge is considered a violation of Canon 4D(1), Code of Judicial Conduct. A justice or judge who has an interest in a business entity that is prohibited by this section must report the interest to the State Commission on Judicial Conduct.